/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Selection/DynamicMeshSelector.h
FGeometryIdentifierfor the parent of this Selector (eg aUDynamicMeshComponentin the common case)
virtual [FGeometryIdentifier](API\Plugins\ModelingComponents\Selection\FGeometryIdentifier) GetSourceGeometryIdentifier() const